We build multi-tenant SaaS platforms and internal enterprise systems: subscription billing, roles and permissions, audit trails, single sign-on, and the integrations that make software adoptable inside a company, not merely functional.
SaaS products rarely fail on features. They fail on the parts nobody demos: tenant isolation designed after the first enterprise customer asks about it, billing that cannot express the plan sales just sold, and permissions bolted on when a customer needs read-only access for auditors.
Those decisions are structural. Retrofitting multi-tenancy or access control into a system built without them is close to a rewrite, and it always arrives at the worst possible moment: when a large customer is about to sign.
We build them in from the start, then keep the first release small. A tight, well-architected v1 that real customers use beats a broad one that took nine months and answered questions nobody had asked.
SaaS development means building software delivered over the web to many customers from one shared system, paid for by subscription. Enterprise application development covers systems built for a single organisation's internal use, where the users are staff, not customers.
Technically both revolve around the same concerns. Multi-tenancy determines how one system serves many customers while keeping their data strictly separate. Authentication and role-based access control determine who can see and do what. Billing turns usage into revenue. Audit logging records who did what and when. Integrations connect the product to the other tools its users already run.
The audience is anyone selling software by subscription, and any organisation whose internal processes have outgrown off-the-shelf tools, where the workflow is specific to them and the workarounds have become the cost.
The problem it solves is scale of a particular kind: serving many customers or many staff from one system without the per-customer manual work, security risk, and inconsistency that spreadsheets and shared logins produce.
The foundation: one system serving many customers with their data reliably separated.
Turning plans and usage into revenue without manual invoicing.
Sign-in that enterprise buyers will accept without a security review stalling the deal.
Granular control over who can see and do what, across tenants and roles.
A public API that turns your product into something others build on.
Connections to the tools your customers already run, which are often the reason they buy.
Custom software for a single organisation's own operations.
SSO, audit logs, and access control are what security reviews look for. Having them ready is often the difference between a signature and a six-week delay.
Automated subscription billing removes invoicing, chasing, and reconciliation, and makes revenue reporting accurate by default.
Tenant isolation designed into the data layer prevents the category of incident that ends a B2B product's reputation permanently.
Self-service onboarding and per-tenant configuration mean new customers do not each require manual setup work.
A billing system that expresses plans as data, not as code means sales can experiment without a release.
Fitting into the stack a customer already runs is frequently the deciding factor between two comparable products.
Systems designed for multi-tenancy and scale from the start avoid the rewrite that otherwise arrives exactly when growth is fastest.
Multi-tenancy, permissions, and billing model are settled before feature work. These cannot be retrofitted cheaply, and they always come due at the worst moment.
We push to cut v1 to what actually proves the product. Broad first releases delay the only feedback that matters, which comes from paying users.
SSO, audit trails, data residency, and access control are planned early, because your first serious customer will ask and the answer decides the deal.
Pricing evolves constantly in early SaaS. We implement billing so plan changes are configuration rather than a development cycle.
Infrastructure and per-tenant running cost are estimated during design, so unit economics are known before scale rather than discovered at it.
You receive the repository, architecture documentation, and training. Long-lived products change hands, and yours should be able to.
Teams who need a v1 that real customers can use and that will not need rebuilding at the first enterprise deal.
Existing SaaS where tenancy, permissions, or billing were improvised and are now the constraint on growth.
Teams whose deals are stalling on SSO, audit logging, and access control questions from security reviewers.
Companies turning a service they deliver manually into software customers can use themselves.
Organisations whose processes no off-the-shelf product fits, where the workaround cost now exceeds a build.
Organisations running critical operations on software nobody can maintain any more.
The priority is a small, well-architected release. Foundations built properly, feature scope cut hard, and real users reached quickly.
The priority is the security review: SSO, audit trails, granular permissions, and clear answers on data handling.
Where tenancy or permissions were improvised, the work is a staged migration, not a rewrite, so the product keeps running.
Moving between seat-based, usage-based, and tiered pricing, including migrating existing customers without disrupting billing.
Where customers need to build on top of you, the public API, webhooks, and documentation become first-class product work.
Where customer data must remain in a jurisdiction, that constrains hosting and architecture from the start. [NEEDS INFORMATION: regions and compliance regimes you must satisfy]
| Deliverable | What it covers |
|---|---|
| Product & technical discovery | Users, first-release scope, and the enterprise requirements likely to arrive in year one. |
| Architecture documentation | Multi-tenancy strategy, data model, permission model, and billing model, written down. |
| Core platform | Tenancy, authentication, role-based permissions, and audit logging built as the foundation. |
| Subscription billing | Plans, trials, upgrades, proration, metering, dunning, and revenue reporting. |
| SSO & identity | SAML and OAuth single sign-on, multi-factor authentication, and user provisioning. |
| Admin & tenant management | Internal tooling for support, plus customer-side admin for managing their own users. |
| Product features | The application itself, built in reviewable increments on the platform. |
| Public API & webhooks | Documented, versioned API with keys, scopes, rate limiting, and event webhooks. |
| Integrations | Connections to the third-party tools agreed in scope, with self-service connection flows. |
| Infrastructure & monitoring | Hosting, deployment pipeline, backups, monitoring, and alerting. |
| Documentation & handover | Repository access, architecture and operations documentation, and team training. |
SaaS platforms are long-lived software products rather than projects with an end date, and they are priced and planned accordingly: an initial build followed by continuing development.
What determines the cost:
For founders, the most useful engagement is usually a tightly scoped first release with the foundations built correctly, followed by iteration against real usage. We agree scope and a fixed price in writing for each phase.
Tell us what you are building and who it is for, and we will propose a first release worth shipping.
It is driven by first-release feature scope, tenancy model, billing complexity, enterprise requirements, and integrations. Scope is the biggest lever by far. We scope and quote each phase in writing instead of pricing an open-ended build.
A focused first release typically runs three to six months. Enterprise requirements such as SSO and audit logging add time, which is why we identify early which of them your first customers will actually demand.
Multi-tenancy is how one system serves many customers while keeping their data separate. It matters because it is close to impossible to retrofit. A product built for one customer needs a rewrite to serve many, and that bill always arrives during growth.
Not for a self-service product aimed at individuals. For B2B products selling to companies, it usually surfaces in the first serious security review, so it is worth architecting for even if it is not built immediately.
Through an established billing provider such as Stripe Billing, integrated so plans, trials, upgrades, proration, and metering are configuration, not code. Early-stage pricing changes constantly, and billing has to absorb that.
Yes. Where tenancy, permissions, or billing were improvised, we assess what can be migrated in stages against what must be rebuilt, and sequence the work so the product keeps running throughout.
Yes. You receive the repository, architecture and operations documentation, and training. We write conventional code specifically so an in-house team can take it over.
Yes. Internal systems share the same concerns: permissions, audit trails, SSO, and integrations, with staff as the users instead of customers. Adoption tends to be the real risk, so the interface matters more than people expect.
We estimate infrastructure and per-tenant running cost during architecture, so unit economics are understood before scale. Hosting is billed by the provider directly, not marked up through us.
SaaS products need continuous development, because real usage always contradicts some assumption. We work on retainer or as dedicated capacity after launch, and the code and documentation are yours if you build an internal team instead.
